<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
  import echarts from 'echarts';
  require('echarts/theme/macarons'); // echarts theme
  import { debounce } from '@/utils';

  const animationDuration = 3000;

  export default {
    props: {
      className: {
        type: String,
        default: 'chart',
      },
      width: {
        type: String,
        default: '100%',
      },
      height: {
        type: String,
        default: '300px',
      },
    },
    data() {
      return {
        chart: null,
      };
    },
    mounted() {
      this.initChart();
      this.__resizeHandler = debounce(() => {
        if (this.chart) {
          this.chart.resize();
        }
      }, 100);
      window.addEventListener('resize', this.__resizeHandler);
    },
    beforeDestroy() {
      if (!this.chart) {
        return;
      }
      window.removeEventListener('resize', this.__resizeHandler);
      this.chart.dispose();
      this.chart = null;
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'macarons');

        this.chart.setOption({
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              // 坐标轴指示器，坐标轴触发有效
              type: 'shadow', // 默认为直线，可选为：'line' | 'shadow'
            },
          },
          radar: {
            radius: '66%',
            center: ['50%', '42%'],
            splitNumber: 8,
            splitArea: {
              areaStyle: {
                color: 'rgba(127,95,132,.3)',
                opacity: 1,
                shadowBlur: 45,
                shadowColor: 'rgba(0,0,0,.5)',
                shadowOffsetX: 0,
                shadowOffsetY: 15,
              },
            },
            indicator: [
              { name: '采购人员', max: 10000 },
              { name: '供应商', max: 20000 },
              { name: 'Marketing', max: 20000 },
            ],
          },
          legend: {
            left: 'center',
            bottom: '10',
            data: ['Allocated Budget', 'Expected Spending', 'Actual Spending'],
          },
          series: [
            {
              type: 'radar',
              symbolSize: 0,
              areaStyle: {
                normal: {
                  shadowBlur: 13,
                  shadowColor: 'rgba(0,0,0,.2)',
                  shadowOffsetX: 0,
                  shadowOffsetY: 10,
                  opacity: 1,
                },
              },
              data: [
                {
                  value: [5000, 7000, 12000, 11000, 15000, 14000],
                  name: 'Allocated Budget',
                },
                {
                  value: [4000, 9000, 15000, 15000, 13000, 11000],
                  name: 'Expected Spending',
                },
                {
                  value: [5500, 11000, 12000, 15000, 12000, 12000],
                  name: 'Actual Spending',
                },
              ],
              animationDuration: animationDuration,
            },
          ],
        });
      },
    },
  };
</script>
